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import socket
import warnings
import eventlet
from eventlet import greenio
try:
from eventlet.green import ssl
except ImportError:
pass
import tests
def listen_ssl_socket(address=('localhost', 0), **kwargs):
sock = ssl.wrap_socket(
socket.socket(),
tests.private_key_file,
tests.certificate_file,
server_side=True,
**kwargs
)
sock.bind(address)
sock.listen(50)
return sock
class SSLTest(tests.LimitedTestCase):
def setUp(self):
# disabling socket.ssl warnings because we're testing it here
warnings.filterwarnings(
action='ignore',
message='.*socket.ssl.*',
category=DeprecationWarning)
super(SSLTest, self).setUp()
@tests.skip_if_no_ssl
def test_duplex_response(self):
def serve(listener):
sock, addr = listener.accept()
sock.recv(8192)
sock.sendall(b'response')
sock = listen_ssl_socket()
server_coro = eventlet.spawn(serve, sock)
client = ssl.wrap_socket(eventlet.connect(sock.getsockname()))
client.sendall(b'line 1\r\nline 2\r\n\r\n')
self.assertEqual(client.recv(8192), b'response')
server_coro.wait()
@tests.skip_if_no_ssl
def test_ssl_close(self):
def serve(listener):
sock, addr = listener.accept()
sock.recv(8192)
try:
self.assertEqual(b'', sock.recv(8192))
except greenio.SSL.ZeroReturnError:
pass
sock = listen_ssl_socket()
server_coro = eventlet.spawn(serve, sock)
raw_client = eventlet.connect(sock.getsockname())
client = ssl.wrap_socket(raw_client)
client.sendall(b'X')
greenio.shutdown_safe(client)
client.close()
server_coro.wait()
@tests.skip_if_no_ssl
def test_ssl_connect(self):
def serve(listener):
sock, addr = listener.accept()
sock.recv(8192)
sock = listen_ssl_socket()
server_coro = eventlet.spawn(serve, sock)
raw_client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
ssl_client = ssl.wrap_socket(raw_client)
ssl_client.connect(sock.getsockname())
ssl_client.sendall(b'abc')
greenio.shutdown_safe(ssl_client)
ssl_client.close()
server_coro.wait()
@tests.skip_if_no_ssl
def test_ssl_unwrap(self):
def serve():
sock, addr = listener.accept()
self.assertEqual(sock.recv(6), b'before')
sock_ssl = ssl.wrap_socket(sock, tests.private_key_file, tests.certificate_file,
server_side=True)
sock_ssl.do_handshake()
self.assertEqual(sock_ssl.recv(6), b'during')
sock2 = sock_ssl.unwrap()
self.assertEqual(sock2.recv(5), b'after')
sock2.close()
listener = eventlet.listen(('127.0.0.1', 0))
server_coro = eventlet.spawn(serve)
client = eventlet.connect(listener.getsockname())
client.sendall(b'before')
client_ssl = ssl.wrap_socket(client)
client_ssl.do_handshake()
client_ssl.sendall(b'during')
client2 = client_ssl.unwrap()
client2.sendall(b'after')
server_coro.wait()
@tests.skip_if_no_ssl
def test_sendall_cpu_usage(self):
"""SSL socket.sendall() busy loop
https://bitbucket.org/eventlet/eventlet/issue/134/greenssl-performance-issues
Idea of this test is to check that GreenSSLSocket.sendall() does not busy loop
retrying .send() calls, but instead trampolines until socket is writeable.
BUFFER_SIZE and SENDALL_SIZE are magic numbers inferred through trial and error.
"""
# Time limit resistant to busy loops
self.set_alarm(1)
stage_1 = eventlet.event.Event()
BUFFER_SIZE = 1000
SENDALL_SIZE = 100000
def serve(listener):
conn, _ = listener.accept()
conn.setsockopt(socket.SOL_SOCKET, socket.SO_SNDBUF, BUFFER_SIZE)
self.assertEqual(conn.recv(8), b'request')
conn.sendall(b'response')
stage_1.wait()
conn.sendall(b'x' * SENDALL_SIZE)
server_sock = listen_ssl_socket()
server_coro = eventlet.spawn(serve, server_sock)
client_sock = eventlet.connect(server_sock.getsockname())
client_sock.setsockopt(socket.SOL_SOCKET, socket.SO_RCVBUF, BUFFER_SIZE)
client = ssl.wrap_socket(client_sock)
client.sendall(b'request')
self.assertEqual(client.recv(8), b'response')
stage_1.send()
tests.check_idle_cpu_usage(0.2, 0.1)
server_coro.kill()
@tests.skip_if_no_ssl
def test_greensslobject(self):
def serve(listener):
sock, addr = listener.accept()
sock.sendall(b'content')
greenio.shutdown_safe(sock)
sock.close()
listener = listen_ssl_socket()
eventlet.spawn(serve, listener)
client = ssl.wrap_socket(eventlet.connect(listener.getsockname()))
self.assertEqual(client.recv(1024), b'content')
self.assertEqual(client.recv(1024), b'')
@tests.skip_if_no_ssl
def test_regression_gh_17(self):
# https://github.com/eventlet/eventlet/issues/17
# ssl wrapped but unconnected socket methods go special code path
# test that path at least for syntax/typo errors
sock = ssl.wrap_socket(socket.socket())
sock.settimeout(0.01)
try:
sock.sendall(b'')
except ssl.SSLError as e:
assert 'timed out' in str(e)
@tests.skip_if_no_ssl
def test_no_handshake_block_accept_loop(self):
listener = listen_ssl_socket()
listener.settimeout(0.3)
def serve(sock):
try:
name = sock.recv(8)
sock.sendall(b'hello ' + name)
except Exception:
# ignore evil clients
pass
finally:
greenio.shutdown_safe(sock)
sock.close()
def accept_loop():
while True:
try:
sock, _ = listener.accept()
except socket.error:
return
eventlet.spawn(serve, sock)
loopt = eventlet.spawn(accept_loop)
# evil no handshake
evil = eventlet.connect(listener.getsockname())
good = ssl.wrap_socket(eventlet.connect(listener.getsockname()))
good.sendall(b'good')
response = good.recv(16)
good.close()
assert response == b'hello good'
evil.close()
listener.close()
loopt.wait()
eventlet.sleep(0)
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